Results 91 to 100 of about 132,472 (337)

Aromatic Plants in Eurasian Blue Tit Nests: The ‘Nest [PDF]

open access: yes, 2012
The ‘Nest Protection Hypothesis’ suggests that some birds add aromatic plants to their nests to repel or kill ectoparasites. This behavior has been described for several species, including the Eurasian Blue Tit (Cyanistes caeruleus).
Belo, A.D.F.   +2 more
core   +1 more source

Oil, Volatility, and Institutions

open access: yesFederal Reserve Bank of Dallas, Globalization and Monetary Policy Institute Working Papers, 2017
This chapter examines the long-run effects of oil revenue and its volatility on economic growth, as well as the role of institutions in this relationship. We collect annual and monthly data on 17 major oil producers between 1961 and 2013, and use the panel autoregressive distributed lag (ARDL) approach as well as its cross-sectionally augmented version
El-Anshasy, A.   +2 more
openaire   +1 more source

Recent Advances on Thermochromic Inks for Security Applications

open access: yesAdvanced Materials Technologies, EarlyView.
Thermochromic security inks have garnered interest in recent years as security elements for authentication, information encryption, and anti‐counterfeiting. This review outlines different types of thermochromic materials, how they have been developed as functional inks, and how advancements in property enhancement, sustainability, and printing ...
Duarte B. Oliveira   +5 more
wiley   +1 more source

Antibacterial Effect of Fixed and Volatile Oils against Gram-positive and Gram-negative Bacteria

open access: yesKurdistan Journal of Applied Research, 2019
Antibiotic resistance phenomena among pathogenic bacteria considered as a major health problem ?and associated with increased mortality or long-term hospitalization, which lead to open a new era by using ?plant and herbal extracts as an alternative ...
Tara Faiq M. Salih   +3 more
doaj   +3 more sources

Programmable Dimensional Lithography with Digital Micromirror Devices for Multifunctional Microarchitectures

open access: yesAdvanced Materials Technologies, EarlyView.
This review explores recent advances in digital micromirror device (DMD)‐based lithography, focusing on its programmable light modulation, multi‐material compatibility, and dimensional patterning strategies. It highlights innovations from optical system design to materials integration and multifunctional applications, positioning DMD lithography as a ...
Yubin Lee   +5 more
wiley   +1 more source

Apparatus automatically measures soluble residue content of volatile solvents [PDF]

open access: yes, 1969
Solvent Purity Meter /SPM/ automatically measures the soluble residue in volatile solvents used in cleaning or extraction of oils, greases, and other nonvolatile materials.
Oswalt, F. W.
core   +1 more source

Femtosecond‐Laser‐Fabricated 3D CYTOP Microfluidic Chips Enabling Super‐Resolution Live Imaging of Cell Behavior in Confined Microspaces

open access: yesAdvanced Materials Technologies, EarlyView.
Using two‐photon polymerization of SU‐8 together with mold processing allowed the creation of defect‐free, flexible 3D microfluidic structures with sub‐micrometer precision in CYTOP. The fabricated CYTOP microfluidic chips enabled super‐resolution imaging of cancer cells in the microchannels, clearly visualizing previously undetectable fine structural ...
Koji Sugioka   +16 more
wiley   +1 more source

Hop Harvest Timing [PDF]

open access: yes, 2017
In the Northeast, hop harvest generally begins in mid-August and continues through mid-September. Harvest date is primarily dependent on the hop variety but weather can delay or hasten maturation and impact when harvest will occur. In addition to weather,
Bruce, John   +2 more
core   +2 more sources

Antioxidant activity of thyme waste extract in O/W emulsions [PDF]

open access: yes, 2019
Thymus vulgaris (thyme) is an aromatic plant and its essential oil has been applied as antimicrobial and antioxidant due to the presence of phenolic compounds.
AAZZA, Smail   +8 more
core   +1 more source

Volatility of Oil Prices

open access: yesIMF Working Papers, 1996
This paper examines the behavior of crude oil prices since 1980, and in particular the volatility of these prices. The empirical analysis covers “spot” prices for one of the key internationally traded crudes, namely Dated Brent Blend. A GARCH (generalized autoregressive conditional heteroscedastic) model, which allows the conditional variance to be ...
openaire   +3 more sources

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